Finding the Fourth Proportional to 99,071.76, 136,698.84 and 56,644.56
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Solution
The fourth proportional to 99,071.76, 136,698.84 and 56,644.56 is: 78,157.95
Step by Step Solution
- Step 1: Write the proportion equation
99,071.76 : 136,698.84 = 56,644.56 : x - Step 2: Convert to fraction form
99,071.76/136,698.84 = 56,644.56/x - Step 3: Cross multiply
99,071.76x = 136,698.84 × 56,644.56 - Step 4: Simplify right side
99,071.76x = 7,743,245,644.31 - Step 5: Solve for x
x = 7,743,245,644.31/99,071.76 - Step 6: Final answer
x = 78,157.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.